Home / 860,243.48-1,290,281.84-261,209.90

Finding the Fourth Proportional to 860,243.48, 1,290,281.84 and 261,209.90

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Solution

The fourth proportional to 860,243.48, 1,290,281.84 and 261,209.90 is: 391,789.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,243.48 : 1,290,281.84 = 261,209.90 : x
  2. Step 2: Convert to fraction form
    860,243.48/1,290,281.84 = 261,209.90/x
  3. Step 3: Cross multiply
    860,243.48x = 1,290,281.84 × 261,209.90
  4. Step 4: Simplify right side
    860,243.48x = 337,034,390,398.22
  5. Step 5: Solve for x
    x = 337,034,390,398.22/860,243.48
  6. Step 6: Final answer
    x = 391,789.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.